Results
| WDF World Championship Women 2025 | 11/28 19:30 | 148 | Mayumi Ouchi v Nina Lech-Musialska | 0-2 | |
| WDF World Championship Women 2024 | 12/05 15:45 | 4 | Aileen De Graaf v Mayumi Ouchi | 2-0 | |
| WDF World Championship Women 2024 | 12/01 13:40 | 7 | Lorraine Hyde v Mayumi Ouchi | 1-2 | |
| WDF World Championship Women 2023 | 12/03 14:05 | 7 | Kirsty Hutchinson v Mayumi Ouchi | 2-0 | |
| BDO World Masters Women 2019 | 10/26 17:00 | - |
Lisa Ashton
v
Mayumi Ouchi |
3-1 |